CN112681216A - Bidirectional flow channel pump station circulating water supply pipeline in hydraulic model test and implementation method - Google Patents
Bidirectional flow channel pump station circulating water supply pipeline in hydraulic model test and implementation method Download PDFInfo
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Abstract
A circulating water supply pipeline of a bidirectional flow channel pump station in a hydraulic model test and an implementation method of the circulating water supply pipeline comprise an inland river side water collecting tank, an outer river side water collecting tank, three groups of PVC pipes, a circulating pump, an electromagnetic flowmeter, a first gate valve, a second gate valve, a third gate valve and a fourth gate valve. Inland river side and foreign river side catchment water tank main function collect rivers, simulate river course rivers, make the smooth and easy flow direction low reaches of incoming flow, the whole circulation supply pipe system of PVC nest of tubes constitution is assembled to the upstream catchment water tank after the circulating pump is extracted with the downstream side catchment water tank internal water flow, the electromagnetism flowmeter is installed at the pipe network middle part for measure water flow, the drainage and the diversion operating mode of two-way runner pump station hydraulic model test are realized through the different switching compound mode of control to first, second, third, fourth gate valve. The bidirectional flow channel pump station hydraulic model test device is simple in structure and reliable in technology, can effectively solve the problem that the existing bidirectional flow channel pump station hydraulic model test needs to change the direction of a circulating pump and is time-consuming and labor-consuming when in a variable working condition test, can well complete the bidirectional flow channel pump station hydraulic model test, and has wide application prospect.
Description
Technical Field
The invention belongs to the field of hydraulic model tests, and particularly relates to a circulating water supply pipeline of a bidirectional flow channel pump station in a hydraulic model test and an implementation method.
Background
The hydraulic model test is an experimental technique for reproducing water flow similar to a prototype in a scaled-down model to research various hydraulic problems of a hydraulic building.
The bidirectional flow channel pump station has the dual functions of draining stagnant water and guiding water, can drain inland river water to an inland river, and can pump the inland river water to irrigate the inland river. In the hydraulic model test of the bidirectional flow channel pump station, for simulating two different working conditions of drainage and diversion, when the variable working condition test is performed, water in the model is generally required to be drained, and the direction of a circulating pump is changed, so that the method usually consumes time and labor, and prolongs the test progress, and therefore, the installation method of the circulating water supply pipeline which can be conveniently regulated and controlled is practical and necessary.
Disclosure of Invention
The invention aims to provide a circulating water supply pipeline of a bidirectional flow channel pump station and an installation method thereof, which are used in a hydraulic model test and can effectively solve the problems in the background technology.
The technical scheme provided by the invention is as follows:
a two-way runner pump station circulating water supply pipeline in a hydraulic model test is characterized by comprising an inland river side water collecting tank, a circulating pump, an electromagnetic flowmeter, a first gate valve, a second gate valve, a third gate valve, a fourth gate valve and three groups of PVC pipes; the first group of PVC pipes are positioned between the inland river side water collecting tank and the outer river side water collecting tank and communicated with the opposite sides of the inland river side water collecting tank and the outer river side water collecting tank; two ends of the second group of PVC pipes are respectively communicated with the bottom of the inland river side water collecting tank and are connected in an opposite way; the third group of PVC pipes are respectively communicated with the first group of PVC pipes and the second group of PVC pipes; the tip that first group PVC pipe is close to inland river side header tank sets up the gate valve No. one, and the tip that first group PVC pipe is close to inland river side header tank sets up the gate valve No. two, and the tip that the second group PVC pipe is close to inland river side header tank sets up the gate valve No. three, and the tip that the second group PVC pipe is close to inland river side header tank sets up the gate valve No. four, sets up circulating pump, electromagnetic flowmeter on the PVC pipe of third group.
Furthermore, three groups of PVC pipes form a Y-shaped pipe network.
Furthermore, the circulating pump and the electromagnetic flowmeter are arranged on a third group of PVC pipes in the middle of the Y-shaped pipe network.
The method for realizing the circulating water supply pipeline of the bidirectional flow channel pump station in the hydraulic model test is characterized in that,
1) working condition of drainage
In order to ensure the stability and continuity of incoming flow, water in the catchment tank at the outer river side needs to be pumped into the catchment tank at the inner river side through a circulating water supply network consisting of PVC pipes, at the moment, a first gate valve and a fourth gate valve need to be closed, a second gate valve and a third gate valve need to be opened simultaneously, water in the catchment tank at the outer river side flows out of the second gate valve, is extracted by a circulating pump and flows into the catchment tank at the inner river side through the third gate valve, and the flow rate of the water flow is controlled by controlling the opening degree of the second gate valve or the third gate valve and matching with an electromagnetic flowmeter;
2) water diversion working condition
The water flow direction in the water conservancy project model under the diversion operating mode is that outer river side header tank flows to inner river side header tank, and for the stability of guaranteeing the incoming flow, the water in inner river side header tank need be taken out to outer river side header tank through the circulation water supply network that the PVC pipe constitutes, and at this moment, need close No. two gate valves and No. three gate valves, open No. one gate valve and No. four gate valves simultaneously, rivers in the inner river side header tank flow from No. one gate valve, flow into outer river side header tank through No. four gate valves after the circulating pump is extracted, through controlling No. one gate valve or No. four gate valves aperture size and cooperate the electromagnetic flowmeter to control rivers flow size.
The invention has the beneficial effects that:
the invention provides a circulating water supply pipeline of a bidirectional flow channel pump station used in a hydraulic model test and an installation method, which can effectively solve the problem that the direction of a circulating pump needs to be changed when the hydraulic model test of the existing bidirectional flow channel pump station is changed into a working condition test, and can well complete the hydraulic model bidirectional flow channel pump station test; the invention has simple structure, reliable technology, easy implementation and wide application prospect.
Drawings
FIG. 1 is a schematic plan view of a water supply pipeline for a bi-directional flow channel hydraulic model test;
FIG. 2 is a schematic diagram of the circulation flow of the pipeline water under the drainage condition;
FIG. 3 is a schematic diagram of water circulation flow of a water diversion working condition pipeline;
in the figure: 1 is inland river side header tank, 2 is outer river side header tank, and 3 is first group PVC pipe, and 4 are the circulating pump, and 5 are electromagnetic flow meter, and 6 are gate valves, 7 are No. two gate valves, 8 are No. three gate valves, and 9 are No. four gate valves, and 10 are second group PVC pipe, and 11 are third group PVC pipe.
Detailed Description
The utility model provides a two-way runner pump station circulation water supply line for among hydraulic model test, includes inland river side header tank 1, outer river side header tank 2, three group's PVC pipe (first group PVC pipe 3, second group PVC pipe 10, third group PVC pipe 11), circulating pump 4, electromagnetic flowmeter 5 and gate valve 6, No. two gate valves 7, No. three gate valves 8, No. four gate valves 9. Inland river side and foreign river side catchment case main function collect rivers, simulate river course rivers, make the smooth and easy flow direction low reaches of incoming flow, the whole circulation feed pipe system of PVC nest of tubes constitution assembles the upstream catchment case after the circulating pump is extracted with the downstream side catchment incasement rivers, electromagnetic flowmeter installs on the third group PVC pipe for measure water flow, the drainage and the diversion operating mode of two-way runner pump station hydraulic model test are realized through the different switching compound mode of control to first, second, third, fourth gate valve.
Specifically, the inland river side and the inland river side water collecting tanks are arranged at two ends of the hydraulic model to simulate incoming flow. PVC pipe is installed in the header tank bottom, PVC pipe group becomes and is the zigzag pipe network, and concrete pipe network length can be according to actual model size adjustment.
Specifically, the circulating pump and the electromagnetic flowmeter are arranged on a third group of PVC pipes in the middle of the I-shaped pipe network as shown in the figure, as shown in figure 1. The first gate valve and the second gate valve are arranged on a first group of PVC pipes which are oppositely connected with the catchment tank on the inland river side and the catchment tank on the outer river side, the third gate valve and the fourth gate valve are arranged on a second group of PVC pipes which are laterally connected with the catchment tank on the inland river side and the catchment tank on the outer river side, and the specific installation positions are shown in figure 1.
The drainage working condition and the diversion working condition in the hydraulic model test of the bidirectional flow channel pump station are realized by controlling the opening and closing of the gate valve, and the specific implementation mode is as follows:
the first embodiment is as follows: working condition of drainage
The water flow direction in the drainage working condition water collection tank 1 flows to the outer river side water collection tank 2 for the inner river side water collection tank 1, for ensuring the stability and the continuity of incoming flow, water in the outer river side water collection tank 2 needs to be pumped to the inner river side water collection tank 1 through a circulating water supply network formed by PVC pipes 3, at the moment, a first gate valve 6 and a fourth gate valve 9 need to be closed, a second gate valve 7 and a third gate valve 8 are opened simultaneously, water flow in the outer river side water collection tank 2 flows out of the second gate valve 7, the water flow flows into the inner river side water collection tank 1 through the third gate valve 8 after being extracted by a circulating pump 4, and the flow rate of the water flow is controlled by controlling the opening degree of the second gate valve 7 or the third gate valve 8 and matching with an electromagnetic flowmeter 5.
Example two: water diversion working condition
Under the water diversion working condition, the water flow direction in the water collecting tank 1 on the outer river side flows to the water collecting tank 1 on the inner river side for the water collecting tank 2 on the outer river side, in order to ensure the stability of the incoming flow, water in the water collecting tank 1 on the inner river side needs to be pumped to the water collecting tank 2 on the outer river side through a circulating water supply network consisting of PVC pipes 3, at the moment, a second gate valve 7 and a third gate valve 8 need to be closed, a first gate valve 6 and a fourth gate valve 9 are opened simultaneously, water flow in the water collecting tank 1 on the inner river side flows out from the first gate valve 6, flows into the water collecting tank 2 on the outer river side through the fourth gate valve 9 after being extracted by a circulating pump 4, and the flow rate of the water flow is controlled by controlling the opening degree of the.
In conclusion, the invention effectively overcomes the defects of the prior art and has higher economic value.
While the invention has been described in considerable detail with reference to certain embodiments and examples, it is not intended to be limited to the details shown, since various modifications and changes can be made by those skilled in the art. All changes, equivalents and modifications which come within the spirit of the invention are desired to be protected.
Claims (4)
1. A two-way runner pump station circulating water supply pipeline in a hydraulic model test is characterized by comprising an inland river side water collecting tank, a circulating pump, an electromagnetic flowmeter, a first gate valve, a second gate valve, a third gate valve, a fourth gate valve and three groups of PVC pipes; the first group of PVC pipes are positioned between the inland river side water collecting tank and the outer river side water collecting tank and communicated with the opposite sides of the inland river side water collecting tank and the outer river side water collecting tank; two ends of the second group of PVC pipes are respectively communicated with the bottom of the inland river side water collecting tank and are connected in an opposite way; the third group of PVC pipes are respectively communicated with the first group of PVC pipes and the second group of PVC pipes; the tip that first group PVC pipe is close to inland river side header tank sets up the gate valve No. one, and the tip that first group PVC pipe is close to inland river side header tank sets up the gate valve No. two, and the tip that the second group PVC pipe is close to inland river side header tank sets up the gate valve No. three, and the tip that the second group PVC pipe is close to inland river side header tank sets up the gate valve No. four, sets up circulating pump, electromagnetic flowmeter on the PVC pipe of third group.
2. The circulating water supply pipeline of the bidirectional flow channel pump station in the hydraulic model test as claimed in claim 1, wherein three groups of PVC pipes form a Y-shaped pipe network.
3. The circulating water supply pipeline of the bidirectional flow channel pump station in the hydraulic model test as claimed in claim 2, wherein the circulating pump and the electromagnetic flowmeter are installed on a third group of PVC pipes in the middle of the Y-shaped pipe network.
4. The method for realizing the circulating water supply pipeline of the bidirectional flow channel pump station in the hydraulic model test according to claim 3, which is characterized in that,
1) working condition of drainage
In order to ensure the stability and continuity of incoming flow, water in the catchment tank at the outer river side needs to be pumped into the catchment tank at the inner river side through a circulating water supply network consisting of PVC pipes, at the moment, a first gate valve and a fourth gate valve need to be closed, a second gate valve and a third gate valve need to be opened simultaneously, water in the catchment tank at the outer river side flows out of the second gate valve, is extracted by a circulating pump and flows into the catchment tank at the inner river side through the third gate valve, and the flow rate of the water flow is controlled by controlling the opening degree of the second gate valve or the third gate valve and matching with an electromagnetic flowmeter;
2) water diversion working condition
The water flow direction in the water conservancy project model under the diversion operating mode is that outer river side header tank flows to inner river side header tank, and for the stability of guaranteeing the incoming flow, the water in inner river side header tank need be taken out to outer river side header tank through the circulation water supply network that the PVC pipe constitutes, and at this moment, need close No. two gate valves and No. three gate valves, open No. one gate valve and No. four gate valves simultaneously, rivers in the inner river side header tank flow from No. one gate valve, flow into outer river side header tank through No. four gate valves after the circulating pump is extracted, through controlling No. one gate valve or No. four gate valves aperture size and cooperate the electromagnetic flowmeter to control rivers flow size.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110033967.XA CN112681216A (en) | 2021-01-12 | 2021-01-12 | Bidirectional flow channel pump station circulating water supply pipeline in hydraulic model test and implementation method |
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| CN202110033967.XA CN112681216A (en) | 2021-01-12 | 2021-01-12 | Bidirectional flow channel pump station circulating water supply pipeline in hydraulic model test and implementation method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205894005U (en) * | 2016-08-04 | 2017-01-18 | 白伟华 | Drainage pump station |
| CN110397117A (en) * | 2019-08-19 | 2019-11-01 | 江苏中兴水务有限公司 | A kind of Tubular pumping station using unidirectional tubular through flow pump |
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2021
- 2021-01-12 CN CN202110033967.XA patent/CN112681216A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205894005U (en) * | 2016-08-04 | 2017-01-18 | 白伟华 | Drainage pump station |
| CN110397117A (en) * | 2019-08-19 | 2019-11-01 | 江苏中兴水务有限公司 | A kind of Tubular pumping station using unidirectional tubular through flow pump |
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Application publication date: 20210420 |